I'm working with Samba 4 check out of git. In tracking down a bug I've been asked to test it prior to commit 995d1567265be178b4e45f79ea4562a7041ffa52. What is the git'y speak for rolling back a repo to prior to a specified commit? -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.